– Lat/Long: 48.71° N 121.99° W
South Twin Sister
Weather Forecast, United StatesIssued: 4 pm Tue 21 Jul Local TimeUpdates in: hr min sUpdate imminent
Issued: 4 pm Tue 21 Jul Local Time
Updates in:
Update imminent hr min s
Issued: 4 pm Tue 21 Jul Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–4 Weather SummaryMostly dry. Warm (max 31°C on Tue afternoon, min 16°C on Thu night). Wind will be generally light. | Days 5–7 Weather SummaryModerate rain (total 15mm), heaviest on Sun morning. Warm (max 24°C on Fri afternoon, min 11°C on Sun night). Wind will be generally light. | ||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||
PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  | | |  | |  | | | |  |  |  |  |  | | | |
clear | clear | clear | clear | some clouds | clear | some clouds | clear | clear | clear | rain shwrs | rain shwrs | light rain | light rain | mod. rain | light rain | rain shwrs | |
Cloud base (m) | 9400 | 6050 | 6650 | 8600 | 5800 | 2400 | 2200 | 1650 | 600 | 600 | 600 | 8850 | |||||
km/h | |||||||||||||||||
 |  |  |  |  |  | ||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | — | — | 0.1 | 0.1 | 1.6 | 1 | 10 | 1.9 | 0.3 |
max °C | 31 | 27 | 29 | 31 | 27 | 24 | 25 | 21 | 21 | 24 | 21 | 18 | 19 | 14 | 13 | 13 | 14 |
min °C | 31 | 23 | 26 | 31 | 21 | 22 | 24 | 16 | 18 | 24 | 15 | 16 | 15 | 13 | 13 | 13 | 11 |
chill °C | 31 | 23 | 26 | 31 | 21 | 22 | 24 | 16 | 18 | 24 | 15 | 16 | 15 | 12 | 12 | 12 | 11 |
Freezing level m | 4550 | 4550 | 4650 | 4700 | 4500 | 4450 | 4450 | 4250 | 4050 | 3950 | 3550 | 3100 | 2950 | 2900 | 2700 | 2850 | 3700 |
 | — | — | 5:28 | — | — | 5:28 | — | — | 5:31 | — | — | 5:31 | — | — | 5:33 | — | — |
 | — | 9:00 | — | — | 8:59 | — | — | 8:58 | — | — | 8:57 | — | — | 8:54 | — | — | 8:53 |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Warm (max 31°C on Tue afternoon, min 16°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 15mm), heaviest on Sun morning. Warm (max 24°C on Fri afternoon, min 11°C on Sun night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport | | ||||
SHIP5006 | |||||
Abbotsford Airport |  | ||||
BUOY-46118 | |||||
BUOY-PBFW1 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.